Comments:Xcel suits were originally made only for US Special Forces applications, but they were far to good just for military use, so they eventually released them on to the retail market. Although the Infinity is classed as a Surf suit, the Wind Series version was produced for one year with extra width in the arms and had ankle vents / straps for use as a kite or windsurf specififc suit.it has gained popularity with Kitesurfers and is now getting quite a following by Windsufers. The suit thickness IS as quoted and they are incredibly warm for a double lined suit.